Presents information on the different types of celestial matter known as asteroids, comets, and meteors and on what scientists learned from the impact of a comet on the surface of Jupiter.
Describes the objects that reside in the Milky Way galaxy, including stars, nebulas, clusters, and black holes, and explains what astronomers have discovered about other galaxies.
Describes what meteors and micrometeors are, and describes the different types of meteorites, including lunar and martian meteorites, and how meteorites form craters.